兵器材料科学与工程
兵器材料科學與工程
병기재료과학여공정
Ordnance Material Science and Engineering
2010年
2期
55-58
,共4页
谭兵%张海玲%陈东高%齐果%冯杰才%程朝丰
譚兵%張海玲%陳東高%齊果%馮傑纔%程朝豐
담병%장해령%진동고%제과%풍걸재%정조봉
激光-MIG复合焊%有限元%温度场%镁合金
激光-MIG複閤銲%有限元%溫度場%鎂閤金
격광-MIG복합한%유한원%온도장%미합금
laser-MIG hybrid welding%finite element method%temperature field%Mg alloy
采用MSC.Marc有限元软件对镁合金激光-MIG复合焊的温度场进行数值模拟计算,并与实验结果对比,研究表明:数值计算获得的焊缝截面形状和尺寸与实验结果相比,一致性达到94%以上;母材上3点的计算温度与实测值偏差在8%以内;由于上表面温度向下表面传导,使下表面焊缝从凝同温度冷却到300℃比上表面焊缝所需时间长约50%.
採用MSC.Marc有限元軟件對鎂閤金激光-MIG複閤銲的溫度場進行數值模擬計算,併與實驗結果對比,研究錶明:數值計算穫得的銲縫截麵形狀和呎吋與實驗結果相比,一緻性達到94%以上;母材上3點的計算溫度與實測值偏差在8%以內;由于上錶麵溫度嚮下錶麵傳導,使下錶麵銲縫從凝同溫度冷卻到300℃比上錶麵銲縫所需時間長約50%.
채용MSC.Marc유한원연건대미합금격광-MIG복합한적온도장진행수치모의계산,병여실험결과대비,연구표명:수치계산획득적한봉절면형상화척촌여실험결과상비,일치성체도94%이상;모재상3점적계산온도여실측치편차재8%이내;유우상표면온도향하표면전도,사하표면한봉종응동온도냉각도300℃비상표면한봉소수시간장약50%.
The temperature field of magnesium alloy laser-MIG hybrid welding was simulated by the MSC.Marc software,and the calculated result was compared with that of experimental tests.The results show that the calculated values are in good agreement with experimental measurements in the shape and size of welding joint.The deviation of comparison between computed temperature values and measured temperature values in the three points of the base is all controlled within 8%.The cooling time from solid temperature to 300℃ of the weld in bottom surface will be longer than that in upper surface.
